211030120442 has 8 divisors (see below), whose sum is σ = 316549348500. Its totient is φ = 105513670944.

The previous prime is 211030120397. The next prime is 211030120451. The reversal of 211030120442 is 244021030112.

211030120442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 195663790921 + 15366329521 = 442339^2 + 123961^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493067 + ... + 815582.

Almost surely, 2^211030120442 is an apocalyptic number.

211030120442 is a deficient number, since it is larger than the sum of its proper divisors (105519228058).

211030120442 is a wasteful number, since it uses less digits than its factorization.

211030120442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389280.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 211030120442 its reverse (244021030112), we get a palindrome (455051150554).

The spelling of 211030120442 in words is "two hundred eleven billion, thirty million, one hundred twenty thousand, four hundred forty-two".